TonEBP suppresses IL-10-mediated immunomodulation

作者：Choi Soo Youn; Lee Hwan Hee; Lee Jun Ho; Ye Byeong Jin; Yoo Eun Jin; Kang Hyun Je; Jung Gyu Won; An Seung Min; Lee Kwon Whaseon; Chiong Mario; Lavandero Sergio; Kwon Hyug Moo^*

来源：Scientific Reports, 2016, 6(1): 25726.

DOI：10.1038/srep25726

TonEBP is a key transcriptional activator of M1 phenotype in macrophage, and its high expression is associated with many inflammatory diseases. During the progression of the inflammatory responses, the M1 to M2 phenotypic switch enables the dual role of macrophages in controlling the initiation and resolution of inflammation. Here we report that in human and mouse M1 macrophages TonEBP suppresses IL-10 expression and M2 phenotype. TonEBP knockdown promoted the transcription of the IL-10 gene by enhancing chromatin accessibility and Sp1 recruitment to its promoter. The enhanced expression of M2 genes by TonEBP knockdown was abrogated by antagonism of IL-10 by either neutralizing antibodies or siRNA-mediated silencing. In addition, pharmacological suppression of TonEBP leads to similar upregulation of IL-10 and M2 genes. Thus, TonEBP suppresses M2 phenotype via downregulation of the IL-10 in M1 macrophages.

• 出版日期2016-5-10